CN210799159U

CN210799159U - Cylinder cover combustion chamber

Info

Publication number: CN210799159U
Application number: CN201921507835.0U
Authority: CN
Inventors: 蒋志明; 殷贵良; 平鸿光; 袁洪波; 方天泽; 马建雄
Original assignee: Zhejiang Constant Power Machinery Co ltd
Current assignee: Zhejiang Constant Power Machinery Co ltd
Priority date: 2019-09-11
Filing date: 2019-09-11
Publication date: 2020-06-19
Anticipated expiration: 2029-09-11

Abstract

The utility model discloses a cylinder cover combustion chamber, which is arranged on the bottom surface of a cylinder cover; the combustion chamber consists of a wedge-shaped surface, an additional inclined surface and an outer ring surface; the wedge-shaped surface is provided with an exhaust valve and an intake valve which are arranged in a row; the supplementary inclined plane is arranged at the upper end of the wedge-shaped surface and the supplementary inclined plane and the wedge-shaped surface are intersected to form an obtuse angle; the spark plug is arranged at the intersection of the supplementary inclined plane and the wedge-shaped surface; the outer ring surface is a concave spherical surface and the outer ring surface is the remaining surface of the combustion chamber excluding the wedge surface and the supplementary chamfer. Utility model advantage: local vortex masses are reduced in the air intake process; is beneficial to the formation of tumble flow; the installation height of the spark plug is reduced, and the combustion speed is promoted; the harmful volume of generated gas such as HC and the like is reduced, and the emission is improved.

Description

Cylinder cover combustion chamber

Technical Field

The utility model relates to a combustion chamber technical field, concretely relates to cylinder head combustion chamber.

Background

Most of the existing general gasoline engines adopt a wedge-shaped combustion chamber. The wedge-shaped combustion chamber has a simple and compact structure, and the valve is easy to arrange. Although the wedge-shaped combustion chamber has the advantages, due to structural limitation, the spark plug is generally arranged at the high position of the wedge-shaped combustion chamber, the flame propagation distance is long, and the combustion efficiency is low; local vortex mass and reverse airflow in the air intake process can cause the advance dissipation of turbulent kinetic energy; more vortex mass is not beneficial to tumble formation. In addition, because of the requirement of squish flow, the combustion chamber is often made smaller than the cylinder diameter, when the piston moves up to the top dead center, a thin layer of clearance is formed between the top surface of the piston and the periphery of the combustion chamber, and flame is not easy to spread at the clearance, so that the clearance is a harmful volume for generating gases such as HC and the like.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a cylinder head combustion chamber to the technical problems such as the harmful volume of gas such as current wedge combustion chamber combustion efficiency is low, the whirlpool is more and HC.

The utility model provides an above-mentioned technical problem's technical scheme as follows: a cylinder head combustion chamber is provided on the bottom surface of a cylinder head 10; the combustion chamber 100 is comprised of a wedge face 104, a supplemental bevel 105, and an outer race face 106; an intake valve 102 and an exhaust valve 103 are provided on wedge surface 104 and intake valve 102 and exhaust valve 103 are arranged in a row; a supplementary bevel 105 is provided at the upper end of wedge-face 104 and the two meet to form an obtuse angle; the spark plug 101 is arranged at the intersection of the supplementary inclined surface 105 and the wedge surface 104; the outer ring surface 106 is a concave spherical surface and the outer ring surface 106 is the remaining surface of the combustion chamber 100 excluding the wedge surface 104 and the supplementary bevel 105.

The beneficial effects of the utility model reside in that: local vortex masses are reduced in the air intake process; is beneficial to the formation of tumble flow; the installation height of the spark plug is reduced, and the combustion speed is promoted; the harmful volume of generated gas such as HC and the like is reduced, and the emission is improved.

Drawings

Fig. 1 is a schematic structural view of the present invention;

in the figure, 10, cylinder head; 100. a combustion chamber; 101. a spark plug; 102. an intake valve; 103. an exhaust valve; 104. a wedge-shaped surface; 105. supplementing an inclined plane; 106. an outer ring surface.

Detailed Description

As shown in fig. 1, a cylinder head combustion chamber is provided on the bottom surface of a cylinder head 10; the combustion chamber 100 is comprised of a wedge face 104, a supplemental bevel 105, and an outer race face 106; an intake valve 102 and an exhaust valve 103 are provided on wedge surface 104 and intake valve 102 and exhaust valve 103 are arranged in a row; the structure is simple and compact; a supplementary bevel 105 is provided at the upper end of wedge-face 104 and the two meet to form an obtuse angle; the spark plug 101 is arranged at the intersection of the supplementary inclined surface 105 and the wedge surface 104; the outer ring surface 106 is a concave spherical surface and the outer ring surface 106 is the remaining surface of the combustion chamber 100 excluding the wedge surface 104 and the supplementary bevel 105.

The combustion chamber has the structural characteristics of both a hemispherical combustion chamber and a wedge-shaped combustion chamber. The supplementary bevel 105 is arranged to reduce the generation of local vortex to facilitate the generation of tumble, reduce the reverse air flow to prevent the advance dissipation of turbulent kinetic energy, and reduce the height of the wedge-shaped surface 104; the spark plug supplements the junction of the inclined plane 105 and the wedge-shaped surface 104, so that the installation height of the spark plug is relatively reduced, and the flame propagation distance is shortened; the presence of the outer race surface 106 reduces the occurrence of a narrow gap between the piston crown surface and the periphery of the combustion chamber, and facilitates the discharge of gas such as HC.

The above description is only for the preferred embodiment of the present invention, and for those skilled in the art, there are variations on the detailed description and the application scope according to the idea of the present invention, and the content of the description should not be construed as a limitation to the present invention.

Claims

1. A cylinder head combustion chamber is provided on a bottom surface of a cylinder head (10); the method is characterized in that: the combustion chamber (100) is composed of a wedge surface (104), a supplementary bevel surface (105) and an outer ring surface (106); the wedge-shaped surface (104) is provided with an inlet valve (102) and an outlet valve (103), and the inlet valve (102) and the outlet valve (103) are arranged in a line; the supplementary inclined surface (105) is arranged at the upper end of the wedge-shaped surface (104) and the supplementary inclined surface and the wedge-shaped surface intersect to form an obtuse angle; a spark plug (101) is arranged at the intersection of the supplementary inclined plane (105) and the wedge-shaped surface (104); the outer ring surface (106) is a concave spherical surface and the outer ring surface (106) is the remaining surface of the combustion chamber (100) excluding the wedge surface (104) and the supplementary bevel (105).